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May 22nd, 2026 :: 5:08 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated May 22nd at 3:54 am 
Temperature:55°F Dew Point:46°F
Barometer:30.04 inHg Wind:calm
Humidity:71.6% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
May 22nd
Saturday
May 23rd
Sunday
May 24th
Monday
May 25th
Tuesday
May 26th
Cloudy Mix of Cloud and Sun Mix of Cloud and Sun Mostly Sunny Mostly Sunny
63°F
75°F
58°F
77°F
65°F
79°F
63°F
82°F
65°F
 
 Decatur Detailed Weather Forecast  
 
Friday, May 22nd, 2026
Morning Temperature: 56°F
Cloudy. Windy at times.
Afternoon Temperature: 63°F
Mostly cloudy. Windy at times.
Evening Temperature: 61°F
Cloudy. Windy at times.
Saturday, May 23rd, 2026
Overnight Temperature: 58°F
A mix of cloudy and clear skies.
Morning Temperature: 61°F
A mix of cloud and sun.
Afternoon Temperature: 73°F
A mix of cloud and sun.
Evening Temperature: 70°F
A mix of cloudy and clear skies.
Sunday, May 24th, 2026
Overnight Temperature: 67°F
Mostly cloudy.
Morning Temperature: 66°F
Cloudy with a chance of showers.
Afternoon Temperature: 76°F
Mostly sunny with a chance of showers. Slight chance of a thunderstorm.
Evening Temperature: 71°F
Mostly clear with a chance of showers or thundershowers.
Monday, May 25th, 2026
Overnight Temperature: 64°F
Mostly clear.
Morning Temperature: 68°F
Mostly sunny.
Afternoon Temperature: 78°F
Mostly sunny.
Evening Temperature: 72°F
Mostly clear. Chance of a thunderstorm.
Tuesday, May 26th, 2026
Overnight Temperature: 65°F
Mostly clear.
Morning Temperature: 71°F
Mostly sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 82°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
A mix of clear and cloudy skies. Chance of a thunderstorm.
Wednesday, May 27th, 2026
Overnight Temperature: 67°F
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Morning Temperature: 71°F
A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 76°F
Mostly cloudy. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 71°F
Clear with cloudy periods. Slight chance of a thunderstorm. Windy at times.
Thursday, May 28th, 2026
Overnight Temperature: 66°F
Clear with cloudy periods with a slight chance of showers.
Morning Temperature: 73°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 82°F
Mostly sunny. Slight chance of a thunderstorm. Windy.
Evening Temperature: 74°F
Mostly clear. Windy at times.
Friday, May 29th, 2026
Overnight Temperature: 65°F
Mostly clear. Windy at times.
Morning Temperature: 65°F
Sunny. Windy at times.
Afternoon Temperature: 77°F
Sunny. Windy at times.
Evening Temperature: 68°F
Clear. Windy at times.
Saturday, May 30th, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 78°F
Mostly sunny. Windy at times.
Evening Temperature: 70°F
Clear.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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